Tbh, what you describe sounds nothing like forcing opium on a people. If mexico invaded and started making meth in the US, or started sending even more meth into the US than they do now by totally taking over the border, I would not begin taking meth.

The brits were also running the opium shops. So if you think country A selling opiods in country B and then going to war so that country B can not stop the sale of opiods is totally okay, then that is truly very different from my model of good behavior.

exactly.